Purple Teeth Whitening Strips help brighten the appearance of teeth and reduce common surface stains from coffee, tea, tobacco, and other foods and drinks. The purple color-adjusting formula helps neutralize yellow tones, while the flexible adhesive strips stay securely in place for convenient use. Each box contains 28 individually wrapped strips for 14 treatments. With regular use as directed, they can help reveal a cleaner, brighter-looking smile while providing a refreshing mint sensation.